All praise Numero Group and their wonderful research staff for unearthing this kind of thing.
Numero Group is an archival record label based in Chicago that exists to excavate gems from the past -- they create compilations of previously released music and reissue original albums. They're great at what they do.
Numero Group
Recently they've put out tons of material by incredible bands like Unwound, and Sandy Denny & The Strawbs. Their discography is vast and filled treasures.
Their latest may be the best work they've done to date, though. They've unearthed a UHF show from the 1980s, The Chicago Party, and have now released a boxset of all the magic they've rescued from the past.